CN105627699B - A kind of drying means and device of easy seasoned wood - Google Patents
A kind of drying means and device of easy seasoned wood Download PDFInfo
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- CN105627699B CN105627699B CN201610205103.0A CN201610205103A CN105627699B CN 105627699 B CN105627699 B CN 105627699B CN 201610205103 A CN201610205103 A CN 201610205103A CN 105627699 B CN105627699 B CN 105627699B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/16—Wood, e.g. lumber, timber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of drying means and device of easy seasoned wood,The drying means of the easy seasoned wood of the present invention is accumulated including timber,Heating preheating,Heat up drying,Freeze-day with constant temperature,Cooling and drying and cooling kiln discharge,The drying device of the easy seasoned wood of the present invention includes dry kiln body,Dry kiln body is equipped with dry kiln body gate,The drying device of easy seasoned wood further includes ventilation dewetting system,Heating system,Detecting and controlling system and saturated steam generator,Timber build-up areas is equipped in dry kiln body,Dry kiln body is equipped with the air inlet that can be turned on and off,Ventilation dewetting system,Heating system and saturated steam generator are connected with timber build-up areas,Detecting and controlling system be used to detecting drying parameter in dry kiln body and respectively with ventilation dewetting system,Heating system,Saturated steam generator and air inlet electrical connection,The present invention is fast with rate of drying,The advantages that low energy consumption and environmental pollution is small.
Description
Technical field
The present invention relates to wood processing technique field more particularly to a kind of drying means and device of easy seasoned wood.
Background technology
Drying is the important procedure in timber processing, and energy consumption when dry accounts for about the 40-70% of timber processing total energy consumption, and
The quality of dry mass directly decides the height of utilization rate of timber and the quality of wooden quality.
At present, conventional steam drying is widely used due to having many advantages, such as that technical maturity, useful load are big, is the prior art
In most important method for drying wood, but this method there are capacity usage ratio is low, slow drying speed, long drying time the defects of,
And need externally to discharge dry waste gas during timber is dried using this method, a degree of dirt is generated to environment
Dye, in the easily drying operation of dry sawn timber, veneer wood, which shows especially prominent.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide that a kind of rate of drying is fast, low energy consumption
And the easy seasoned wood quickly drying method and device that environmental pollution is small.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of drying means of easy seasoned wood, includes the following steps：
S1, timber accumulation：Easy seasoned wood is accumulated in the timber build-up areas in dry kiln body, and is disposed in material heap
Temperature sensor and moisture sensor；
S2, heating preheating：Dry kiln body gate and air inlet are closed, it, will be warm in dry kiln body under ventilation dewetting state
Degree is promoted to 40 DEG C -45 DEG C, and keep the temperature 0.5h-2h, continues thereafter with dry kiln body temperature being promoted to 80 DEG C -85 DEG C, and protect
Warm 0.5h-2h；
S3, heating drying：Dry kiln body temperature is promoted to 105 DEG C -110 DEG C, and keep the temperature 0.5h-2h, was being kept the temperature
Cheng Zhong is passed through high-pressure saturated water vapor into dry kiln body, replaces remaining air in dry kiln body with water vapour, works as dry kiln
After internal air content is less than 5%, stopping is passed through high-pressure saturated water vapor；
S4, freeze-day with constant temperature：Dry kiln body temperature is promoted to setting drying temperature T, wherein, 110 DEG C≤T≤160 DEG C,
Dry kiln body temperature is maintained in setting drying temperature T, until easy seasoned wood moisture content is reduced to the target moisture content than setting
Until high 1%-2%；
S5, cooling and drying：Stop promoting dry kiln body temperature, keep ventilation, stop hydrofuge, open dry kiln body into
Gas port makes the slow natural cooling of dry kiln body temperature；
S6, cooling kiln discharge：After easy seasoned wood core layer temperature is reduced to and is no more than 20 DEG C higher than outdoor temperature, drying is opened
Kiln body gate takes out dried easy seasoned wood.
As a further improvement of the above technical scheme：
In the step S1, accumulation processing, the height of material heap are carried out to easy seasoned wood according to LY/T1068-2012 standards
It spends for 1.0m-3.0m, the width of material heap is 1.0m-2.5m, and the thickness of parting bead is 20mm-30mm, and the width of parting bead is 30mm-
40mm。
A kind of drying device of easy seasoned wood, including dry kiln body, the dry kiln body is equipped with dry kiln body gate, institute
Further include ventilation dewetting system, heating system, detecting and controlling system and the saturated vapor for stating the drying device of easy seasoned wood occur
Device, the dry kiln body is interior to be equipped with timber build-up areas, and the dry kiln body is equipped with the air inlet that can be turned on and off, described
Ventilation dewetting system, heating system and saturated steam generator are connected with the timber build-up areas, the detection control system
System for detect the drying parameter in the dry kiln body and respectively with the ventilation dewetting system, heating system, saturated vapor
Generator and air inlet electrical connection.
As a further improvement of the above technical scheme：
The ventilation dewetting system include propeller fan, dehumidifying pipelines and two weep holes that can be turned on and off, two
A weep hole is separately positioned on the front and rear sides of the propeller fan and is connected with the dehumidifying pipelines.
The heating system includes radiator, circulating pump, oil guide pipe and hot oil heater, and the radiator is installed in
In the dry kiln body and pass through the oil guide pipe and connected with the hot oil heater, the circulating pump be installed in described in lead
On oil pipe, it is external that the circulating pump and hot oil heater are installed in the dry kiln.
The saturated steam generator is installed in the dry kiln in vitro and passes through pipeline and connected with the dry kiln body.
The detecting and controlling system is used to detect air content in medium temperature and medium in the dry kiln body, easily
The moisture content of seasoned wood and the temperature of timber sandwich layer.
Compared with prior art, the advantage of the invention is that：
（1）The drying means of the easy seasoned wood of the present invention, compared with conventional steam of the prior art is dried, rate of drying
It greatly improving, energy consumption is also substantially reduced, and in the drying process, dry kiln body without gas exchanges, will not discharge exhaust gas with extraneous,
Reduce the pollution to environment, in addition, can realize the modification to timber in drying process simultaneously, remove the tree in timber
Fat improves the dimensional stability of timber.
（2）The drying device of the easy seasoned wood of the present invention, it is compact-sized, it can be used to implement the easy seasoned wood of the present invention
Drying means so as to improve the drying efficiency of easy seasoned wood, reduces energy consumption for drying, while small to the pollution of environment.
Description of the drawings
Fig. 1 is the front view of easily seasoned wood drying device of the invention.
Fig. 2 is the vertical view of easily seasoned wood drying device of the invention.
Fig. 3 is the side view of easily seasoned wood drying device of the invention.
Each label represents in figure：
1st, dry kiln body；11st, timber build-up areas；12nd, air inlet；2nd, ventilation dewetting system；21st, propeller fan；22、
Weep hole；23rd, dehumidifying pipelines；24th, blowoff basin；3rd, heating system；31st, radiator；32nd, circulating pump；33rd, oil guide pipe；34th, heat conduction
Oil heating unit；5th, saturated steam generator.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Embodiment 1
A kind of drying means of easy seasoned wood, specifically includes following steps：
（1）Timber is accumulated：Wet Lumber of Pinus Massoniana is accumulated in the timber build-up areas in dry kiln body；
In the present embodiment, wet Lumber of Pinus Massoniana is accumulated according to LY/T1068-2012 standards, the thickness of sawn timber is
25mm, length 2.0m, first moisture content is about 75%；Material stack height is 1.5m, and material heap width is 1.5m；The thickness and width of parting bead
Degree is respectively 25mm, 35mm, and the length of parting bead is 1.6m；And it requires to place temperature and moisture content biography in material heap according to standard
Sensor；
（2）Heating preheating：Dry kiln body gate and air inlet are closed, under ventilation dewetting state, by kiln temperature fast lifting
To 42 DEG C, and 1.0 hours are kept the temperature, wet masson pine is made to saw abundant heat penetration；After heat preservation, continue kiln temperature being increased to 80 DEG C, and
Heat preservation 1.0 hours makes wet masson pine saw abundant heat penetration, and in temperature-rise period, heating rate is controlled at 4 DEG C/h；
（3）Heat up drying：Dry kiln body temperature is promoted to 110 DEG C, and keep the temperature 1 hour, to dry in insulating process
High-pressure saturated water vapor is passed through in dry kiln body, remaining air in dry kiln body, the sky in dry kiln body are replaced with water vapour
After Gas content is less than 5%, stopping is passed through high-pressure saturated water vapor；
（4）Freeze-day with constant temperature：Dry kiln body temperature is promoted to 130 DEG C of drying temperature of setting, maintains temperature in dry kiln body
Degree is at 130 DEG C, until easy seasoned wood moisture content is reduced to 10% or so；
（5）Cooling and drying：Stop promoting dry kiln body temperature, keep ventilation, stop hydrofuge, open dry kiln body into
Gas port makes the slow natural cooling of dry kiln body temperature；
（6）Cool down kiln discharge：When timber core layer temperature is reduced to 35 DEG C, wicket is opened, and dried masson pine is sawed
Material kiln discharge.
It is obtained by experiment, in the present embodiment, Lumber of Pinus Massoniana is dried to 9% from moisture content for 75%, drying time
It it is 2.5 days, less than the half of conventional drying time, power consumption reduces by 55%, and dry mass is preferable, and Lumber of Pinus Massoniana reaches de-
Fat two level material standard, drying process is closed cycle, no dry waste gas discharge, and environmental pollution is small.
Embodiment 2
A kind of drying means of easy seasoned wood, specifically includes following steps：
（1）Timber is accumulated：Wet board using poplar board is accumulated in the timber build-up areas in dry kiln body；
In the present embodiment, wet board using poplar board is accumulated according to LY/T1068-2012 standards, the thickness of board using poplar board
For 1.2mm, width 1.22m, length 2.44m, average moisture content 92%, in banking process, first by 15 layers of veneer in thickness
Degree direction first stack into the veneer layer of 18mm thickness, then place one layer of parting bead, replace successively, material stack height be 1.2m, material heap width
For 1.22m；The thickness and width of parting bead is respectively 20mm, 30mm, and the length of parting bead is 1.4m.And it is required according to standard in veneer
Temperature and moisture sensor are placed in material heap.
（2）Heating preheating：Dry kiln body gate and air inlet are closed, under ventilation dewetting state, by kiln temperature fast lifting
To 45 DEG C, and 0.5 hour is kept the temperature, make the abundant heat penetration of wet board using poplar board；After heat preservation, continue kiln temperature being increased to 85 DEG C, and
Heat preservation 0.5 hour, makes the abundant heat penetration of wet board using poplar board, and in temperature-rise period, heating rate is controlled at 5 DEG C/h.
（3）Heat up drying：Dry kiln body temperature is promoted to 110 DEG C, and keeps the temperature 0.5 hour, in insulating process to
High-pressure saturated water vapor is passed through in dry kiln body, remaining air in dry kiln body is replaced with water vapour, when in dry kiln body
After air content is less than 5%, stopping is passed through high-pressure saturated water vapor；
（4）Freeze-day with constant temperature：Dry kiln body temperature is promoted to 150 DEG C of drying temperature of setting, maintains temperature in dry kiln body
Degree is at 130 DEG C, until easy seasoned wood moisture content is reduced to 8% or so；
（5）Cooling and drying：Stop promoting dry kiln body temperature, keep ventilation, stop hydrofuge, open dry kiln body into
Gas port makes the slow natural cooling of dry kiln body temperature；
（6）Cool down kiln discharge：When timber core layer temperature is reduced to 40 DEG C, wicket is opened, and by dried wet poplar list
Plate kiln discharge.
In the present embodiment, board using poplar board is dried to 8% from moisture content for 92%, drying time is only 15 hours, no
To the half of conventional drying time, power consumption reduces by 62%, and dry mass is preferable, and drying process is closed cycle, no dry useless
Gas discharges, and environmental pollution is small.
Fig. 1 to Fig. 3 shows a kind of embodiment of easily seasoned wood drying device of the invention, which can
For realizing the easy seasoned wood drying means of the present invention, which includes dry kiln body 1, and dry kiln body 1 is equipped with dry kiln body
Gate, the drying device of easy seasoned wood further include ventilation dewetting system 2, heating system 3, detecting and controlling system and saturated vapor
Generator 5, dry kiln body 1 is interior to be equipped with timber build-up areas 11, and dry kiln body 1 is equipped with the air inlet 12 that can be turned on and off,
Ventilation dewetting system 2, heating system 3 and saturated steam generator 5 are connected with timber build-up areas 11, and detecting and controlling system is used
In the drying parameter in the dry kiln body 1 of detection and respectively with ventilation dewetting system 2, heating system 3, saturated steam generator 5 and
Air inlet 12 is electrically connected, and ventilation dewetting system 2 is used to implement ventilation and hydrofuge in dry kiln body 1, and heating system 3 is used to be promoted
Temperature in dry kiln body 1, steam generator 5 are used to be passed through high-pressure saturated water vapor into dry kiln body in insulating process,
Detecting and controlling system can detect air content in medium temperature and medium in the dry kiln body 1 of detection, easy seasoned wood it is aqueous
The temperature of rate and timber sandwich layer, and control air inlet 12, ventilation dewetting system 2, heating system 3 and saturated steam generator 5
It opens and closes, the apparatus structure is simple, compact, the drying means of the easy seasoned wood of the present invention is can be used to implement, so as to carry
The drying efficiency of high easily seasoned wood, reduces energy consumption for drying, while small to the pollution of environment.
In the present embodiment, ventilation dewetting system 2 can be turned on and off including propeller fan 21, dehumidifying pipelines 23 and two
Weep hole 22, two weep holes 22 are separately positioned on the front and rear sides of propeller fan 21 and are connected with dehumidifying pipelines 23,
In the warm that heats up, propeller fan 21 is opened, opens the weep hole 22 of 21 positive pressure side of propeller fan, closing axle circulation
The weep hole 22 of 21 suction side of wind turbine realizes the ventilation dewetting state of dry kiln body 1, during cooling and drying, keep
Propeller fan 21 is opened, and closes the hydrofuge 22 of 21 positive pressure side of propeller fan, and hydrofuge pipeline 23 is connected with blowoff basin 24.
In the present embodiment, heating system 3 includes radiator 31, circulating pump 32, oil guide pipe 33 and hot oil heater 34,
Radiator 31 is installed in dry kiln body 1 and passes through oil guide pipe 33 and connected with hot oil heater 34, and circulating pump 32 is installed in
On oil guide pipe 33, circulating pump 32 and hot oil heater 34 are installed in outside dry kiln body 1, by radiator 31 by conduction oil
Heat distribute to timber build-up areas 11, so as to promote the temperature in dry kiln body 1.
In the present embodiment, saturated steam generator 5 is installed in outside dry kiln body 1 and passes through pipeline and connected with dry kiln body 1.
In the present embodiment, the air that detecting and controlling system is used to detect in the medium temperature and medium in dry kiln body 1 contains
Amount, the temperature of the moisture content of easy seasoned wood and timber sandwich layer, detecting and controlling system is according to the program of setting and is detected above-mentioned
The opening and closing of state modulator air inlet 12, ventilation dewetting system 2, heating system 3 and saturated steam generator 5 realize this
The drying means of the easy seasoned wood of invention.
Although the present invention is disclosed above with preferred embodiment, it is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, in the case where not departing from technical solution of the present invention range, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification should all be fallen in the range of technical solution of the present invention protection.
Claims (2)
1. a kind of drying means of easy seasoned wood, which is characterized in that include the following steps：
S1, timber accumulation：Easy seasoned wood is accumulated in the timber build-up areas in dry kiln body, and temperature is disposed in material heap
Sensor and moisture sensor；
S2, heating preheating：Dry kiln body gate and air inlet are closed, under ventilation dewetting state, dry kiln body temperature is carried
40 DEG C -45 DEG C are risen to, and keeps the temperature 0.5 h -2h, continues thereafter with and dry kiln body temperature is promoted to 80 DEG C -85 DEG C, and keep the temperature
0.5 h -2 h；
S3, heating drying：Dry kiln body temperature is promoted to 105 DEG C -110 DEG C, and keeps the temperature 0.5-2 hours, in insulating process
In, high-pressure saturated water vapor is passed through into dry kiln body, remaining air in dry kiln body is replaced with water vapour, when dry kiln body
After interior air content is less than 5%, stopping is passed through high-pressure saturated water vapor；
S4, freeze-day with constant temperature：Dry kiln body temperature is promoted to setting drying temperature T, wherein, it 110 DEG C≤T≤160 DEG C, maintains
Dry kiln body temperature setting drying temperature T, until easy seasoned wood moisture content be reduced to it is higher 1%- than the target moisture content of setting
Until 2%；
S5, cooling and drying：Stop promoting dry kiln body temperature, keep ventilation, stop hydrofuge, open the air inlet of dry kiln body
Mouthful, make the slow natural cooling of dry kiln body temperature；
S6, cooling kiln discharge：After easy seasoned wood core layer temperature is reduced to and is no more than 20 DEG C higher than outdoor temperature, dry kiln body is opened
Gate takes out dried easy seasoned wood.
2. the drying means of easy seasoned wood according to claim 1, it is characterised in that：In the step S1, according to LY/
T1068-2012 standards carry out easy seasoned wood accumulation processing, and the height of material heap is 1.0m-3.0m, and the width of material heap is 1.0 m
- 2.5m, the thickness of parting bead is 20 mm -30mm, and the width of parting bead is 30 mm -40mm.
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| CN106003342A (en) * | 2016-06-08 | 2016-10-12 | 王宾 | Solid wood door raw material drying and processing process |
| CN107192224B (en) * | 2017-04-28 | 2019-07-09 | 中南林业科技大学 | The energy-efficient drying device of minute-pressure self arrangement timber and drying means |
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| CN107621133A (en) * | 2017-09-20 | 2018-01-23 | 中南林业科技大学 | A kind of linden method for drying wood |
| CN108844344B (en) * | 2018-08-30 | 2024-05-21 | 桂林电子科技大学 | Rare earth drying kiln |
| CN109489357B (en) * | 2018-10-30 | 2021-01-29 | 中南林业科技大学 | Combined multipurpose drying kiln for wood and using method thereof |
| CN111438780B (en) * | 2020-04-20 | 2023-07-21 | 中南林业科技大学 | Integrated device for drying and heat treatment of timber by superheated steam and application method |
| CN113701463A (en) * | 2021-08-23 | 2021-11-26 | 浙江世友木业有限公司 | Combined drying method and drying device thereof |
| WO2023023896A1 (en) * | 2021-08-23 | 2023-03-02 | 浙江世友木业有限公司 | Combined drying method and drying device thereof |
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| DE2800238C2 (en) * | 1978-01-04 | 1987-10-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Plant for drying granular, chip or fibrous materials |
| US4343095A (en) * | 1981-03-24 | 1982-08-10 | The United States Of America As Represented By The Secretary Of Agriculture | Pressure dryer for steam seasoning lumber |
| CN102564106A (en) * | 2011-12-05 | 2012-07-11 | 东北林业大学 | Wood drying remote monitoring system based on DSP (digital signal processor) |
| CN202470718U (en) * | 2011-12-31 | 2012-10-03 | 福建省莆田华闽实业有限公司 | Wood drying device |
| CN202928288U (en) * | 2012-11-08 | 2013-05-08 | 安徽福沃德干燥设备有限公司 | Wood drying experimental kiln |
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| CN205536905U (en) * | 2016-04-05 | 2016-08-31 | 中南林业科技大学 | Drying device of easy seasoned wood |
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